WO2012098819A1 - Vehicle charging system - Google Patents
Vehicle charging system Download PDFInfo
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- WO2012098819A1 WO2012098819A1 PCT/JP2011/080412 JP2011080412W WO2012098819A1 WO 2012098819 A1 WO2012098819 A1 WO 2012098819A1 JP 2011080412 W JP2011080412 W JP 2011080412W WO 2012098819 A1 WO2012098819 A1 WO 2012098819A1
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- WO
- WIPO (PCT)
- Prior art keywords
- power
- charging
- vehicle
- power supply
- control unit
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/305—Communication interfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
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- B60L2250/00—Driver interactions
- B60L2250/16—Driver interactions by display
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/50—Control modes by future state prediction
- B60L2260/52—Control modes by future state prediction drive range estimation, e.g. of estimation of available travel distance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- B60L2260/50—Control modes by future state prediction
- B60L2260/54—Energy consumption estimation
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Definitions
- the present invention relates to a vehicle charging system.
- Priority is claimed on Japanese Patent Application No. 2011-008697, filed January 19, 2011, the content of which is incorporated herein by reference.
- a charging cable used when charging a battery of an electric vehicle from a power supply (external power supply) outside the vehicle such as an AC power supply for housing
- designation of a charging time zone or charging start time, or charging mode is known (for example, refer to patent documents 1).
- a charge control device is known in which a pilot signal output from an oscillator in a power cable is used as a start signal of a charging system of a vehicle (see, for example, Patent Document 2).
- the charging cable or the power cable detects the connection state between the charging cable and the charging system of the vehicle, and the connection between the external power supply and the charging system of the vehicle at the occurrence of overcurrent or leakage current. It is equipped with a charge interrupting device (CCID: Charging Circuit Interrupt Device) which performs interrupting and the like.
- CCID Charging Circuit Interrupt Device
- the activation of the vehicle charging system is controlled by a control pilot signal (CPL signal: Control Pilot Line signal) output from the charge shutoff device.
- CPL signal Control Pilot Line signal
- the cut-off current value of the charge cut-off device is only set in advance according to the cut-off current value of the relay etc. provided in the charge cut-off device
- this cutoff current value does not reflect the allowable power that can be supplied by the external power supply.
- the current limiter or circuit breaker
- the current limiter provided in the external power supply may interrupt the power supplied from the external power supply, including the power supply in the house.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle charging system capable of appropriately charging the battery of the vehicle according to the power that can be supplied by the external power supply.
- a vehicle charging system includes a vehicle and a vehicle including a charge control unit that controls charging of the battery, and an external of the vehicle
- a charging cable comprising: an external power supply provided; a power line connecting the external power supply and the vehicle so as to allow power exchange, and a first communication control unit connected to the power line;
- An external power supply line connectable to the power line of the cable and the external power supply are provided, connected to the external power supply line, and can communicate with the first communication control unit by power line communication via the power line and the external power line A second communication control unit and the external power supply to obtain power consumption consumed by the external power supply other than charging the battery of the vehicle
- a power consumption acquisition unit a chargeable power calculation unit provided in the external power supply and calculating chargeable power obtained by subtracting the power consumption from the maximum power supply that can be supplied by the external power supply, and the charge cable
- a transmission unit for transmitting information related to the chargeable power received by the first communication control unit to the charge control unit of
- the charging cable includes a display unit, and the control unit is configured to determine a maximum charging current based on the information of the chargeable power received by the first communication control unit.
- the charge completion time is calculated, and the calculation result is displayed on the display unit.
- the first communication control unit of the charging cable and the second communication control unit of the external power supply can communicate by power line communication. And since the control part of a charge cable supplies electric power to the battery of a vehicle based on the information related to the chargeable electric power acquired from the external power supply by this power line communication, it can charge appropriately.
- control unit of the charging cable draws charging power for the battery of the vehicle in a power range equal to or less than the chargeable power acquired from the external power supply. This can prevent the external power supply from drawing excessive power exceeding the chargeable power that can be supplied for charging the battery, and the current limiter (or circuit breaker, etc.) of the external power supply when charging the battery. Can be prevented from operating.
- the calculation accuracy of the maximum charging current and the charging completion time can be improved based on the information of the chargeable power acquired from the external power supply, and the convenience is improved. be able to.
- FIG. 1 is a configuration diagram of a vehicle charging system according to an embodiment of the present invention. It is a time chart which shows an example of operation of charge using a charge cable of a vehicle charge system concerning an embodiment of the invention. It is a flowchart which shows operation
- the vehicle charging system 10 includes a vehicle 14 equipped with an external power supply 11 such as a household power supply, a charging cable 12, and a battery 13. Further, the external power supply 11 and the battery 13 of the vehicle 14 are connected by the charging cable 12.
- the vehicle charging system 10 is a plug-in type vehicle charging system capable of charging the battery 13 of the vehicle 14 by the power supplied from the external power supply 11.
- the external power supply 11 includes, for example, a current limiter 21, an outlet 22, a control unit 23 (a power consumption acquisition unit, a chargeable power calculation unit), and a PLC communication unit 24 (a second communication control unit). And a display unit 26 including, for example, a liquid crystal display device.
- the current limiter 21 is connected to an external power source P such as a power company, for example, and cuts off a current exceeding a predetermined contract current value set in advance for a consumer provided with the external power source 11, and Block the abnormally large current flowing to the load 25 used in
- the outlet 22 is connectable to the plug 31 of the charging cable 12 and connects the external power supply 11 and the charging cable 12 so that they can exchange electric power.
- the control unit 23 acquires various types of information regarding power consumption in the external power supply 11 and controls the display unit 26 and the PLC communication unit 24 based on the information.
- control unit 23 acquires the power consumption PIF consumed by the load 25 (that is, the power consumption consumed other than the charging of the battery 13 of the vehicle 14 described later), and displays the power consumption PIF as the display unit 26. Display on.
- control unit 23 obtains the maximum supply power PMAX that can be supplied by the external power supply 11 (that is, the maximum supply power that can be supplied from the current limiter 21 of the external power supply 11), and consumes the maximum supply power PMAX.
- the chargeable power PEV (information related to the chargeable power) obtained by subtracting the power PIF is calculated.
- control unit 23 obtains information of allowable power PCCID from charging cable 12 by power line communication via PLC communication unit 24, and can finally charge according to the comparison between allowable power PCCID and chargeable power PEV. Set the power PEV. Then, the control unit 23 transmits the information of the chargeable power PEV from the PLC communication unit 24 to the charging cable 12.
- control unit 23 calculates the charging current ICHG (information related to the chargeable power) according to the chargeable power PEV and the power supply voltage VAC of the external power supply 11, and performs the PLC communication of the information of the charging current ICHG. It is transmitted from the unit 24 to the charging cable 12.
- control unit 23 adds the value (current value) at the current time of the power consumption PIF consumed by the load 25 to the acquisition, and information of the operation reservation already set for the load 25 Or based on the information of change according to the time of the power consumption PIF acquired in the past, etc., the power demand (power demand forecast value) predicted after the current time is predicted, and the information of this power demand forecast value is communicated by PLC It is transmitted from the unit 24 to the charging cable 12.
- the PLC communication unit 24 of the external power supply 11 is connected to the power line (external power supply power line 11L) of the external power supply 11.
- the communication unit 24 can communicate with a PLC communication unit 33 (first communication control unit) of the charge cable 12 described later by power line communication via the external power supply power line 11L and the power line 12L of the charge cable 12. That is, the PLC communication unit 24 of the external power supply 11 and the PLC communication unit 33 of the charging cable 12 transmit the power signal and various information signals to the external power line 11L and the power line 12L of the charging cable 12 by multiplexing. Do.
- the charging cable 12 is, for example, a plug 31 connectable to an outlet 22 of the external power supply 11, a vehicle-side plug 32, a PLC communication unit 33, a CPU (Central Processing Unit) 34, a memory 35, and an AC. / DC converter 36, leakage detection unit 37, relay 38, relay drive unit 39, input unit 40, display unit 41, voltage sensor 42, CPL output unit 43 (transmission unit), changeover switch 44 And is configured to provide.
- the vehicle-side plug 32 is connectable to the plug-in connector 51 of the vehicle 14, and connects the charging cable 12 and the battery 13 of the vehicle so as to be able to exchange electric power.
- the PLC communication unit 33 is connected to the power line 12L of the charging cable 12, and can communicate with the PLC communication unit 24 of the external power supply 11 by power line communication via the power line 12L and the external power supply line 11L of the external power supply 11.
- the CPU 34 centrally controls charging of the battery 13 of the vehicle 14 using the charging cable 12.
- a memory 35 in which various data are stored is connected to the CPU 34, and DC power is supplied from an AC / DC converter 36 that converts AC power supplied from the external power supply 11 into DC power.
- the CPU 34 responds to the signal of the detection result output from the electric leakage detection unit 37 that detects the presence or absence of electric leakage. It controls the operation of the relay drive unit 39 to be driven. That is, when the leakage detection unit 37 detects the occurrence of the leakage, the CPU 34 instructs the relay drive unit 39 to turn off the relay 38 and cut off the current of the power line 12L.
- the CPU 34 drives the relay 38 to turn on the current of the power line 12L. To start charging the battery 13 of the vehicle 14.
- the CPU 34 drives the relay 38 off to set the current of the power line 12L. To stop charging the battery 13 of the vehicle 14.
- the CPU 34 can, for example, instruct execution of various control operations in accordance with a signal output from the input unit 40 including an operator operable switch or button.
- the CPU 34 acquires various types of information related to the charging of the battery 13 of the vehicle 14 by the external power supply 11, and displays the information on the display unit 41.
- the CPU 34 acquires, via the PLC communication unit 33, information on the chargeable power PEV transmitted from the PLC communication unit 24 of the external power supply 11 by power line communication, to the charging voltage VEV applied to the vehicle side plug 32 Based on the calculated maximum charging current ICHGM.
- maximum charging power PCHGM is calculated based on maximum charging current ICHGM and power supply voltage VAC of external power supply 11, and maximum charging power PCHGM and maximum charging current ICHGM are displayed on display unit 41.
- the CPU 34 acquires, via the PLC communication unit 33, information of the power demand forecast value transmitted from the PLC communication unit 24 of the external power supply 11 by power line communication. Furthermore, the CPU 34 acquires information of the required power amount U from the BATECU 53 (charge control unit) of the vehicle 14, and based on the power demand forecast value of the external power supply 11 and the required power amount U of the vehicle 14, charging completion time TE The charging completion time TE is displayed on the display unit 41.
- the CPU 34 outputs from the voltage sensor 42 that detects the voltage of the CPL signal output from the CPL output unit 43 to the control pilot (CPL: Control Pilot Line) communication line L between the charging cable 12 and the vehicle 14
- the CPL output unit 43 is controlled based on the received signal.
- the CPL output unit 43 includes two terminals 44a and 44b.
- the oscillation signal of the CPL signal is output from one of the terminals 44a (first terminal), and the signal of constant voltage is output from the other terminal 44b (second terminal).
- the changeover switch 44 selects one of the two terminals 44a and 44b under the control of the CPU 34, and connects it to the CPL communication line L via the resistor R1.
- the CPU 34 acquires, via the PLC communication unit 33, information on the charging current ICHG transmitted from the PLC communication unit 24 of the external power supply 11 by power line communication. Further, the CPU 34 transmits a CPL signal (oscillation signal) having a pulse width indicating the magnitude of the charging current ICHG from the CPL output unit 43 to the BAT ECU 53 of the vehicle 14.
- a CPL signal oscillation signal
- the vehicle 14 includes, for example, a repeatedly chargeable battery 13 including a lithium ion secondary battery and the like, a plug-in connector 51 connectable to the vehicle side plug 32 of the charging cable 12, a charger 52, and a CPU etc. It is comprised so that BATECU53 which is ECU (Electronic Control Unit: Electronic control unit) comprised by an electronic circuit, and the switch 54 are provided.
- BATECU53 is ECU (Electronic Control Unit: Electronic control unit) comprised by an electronic circuit, and the switch 54 are provided.
- the charger 52 is connected to the plug-in connector 51 by the power line 14L of the vehicle 14, and includes, for example, an inverter or the like that converts AC power supplied from the external power supply 11 via the charging cable 12 into DC power. There is. Further, in accordance with the control of the BATECU 53, the charger 52 charges the battery 13 with the power supplied from the external power supply 11.
- the BATECU 53 detects, for example, the charge state of the battery 13. Based on the detection result and the CPL signal transmitted from the charging cable 12, the BATECU 53 controls the charging of the battery 13 by controlling the operation of the charger 52 and the switch 54.
- the BATECU 53 when the BATECU 53 receives a CPL signal (oscillation signal) having a pulse width indicating the magnitude of the charging current ICHG from the charging cable 12 via the CPL communication line L, it outputs a command signal for charging execution to the switch 54.
- the switch 54 is turned on.
- the BATECU 53 supplies the charging current corresponding to the duty ratio (pulse width) of the CPL signal to the battery 13, and sets the input current limit value of the charger 52 to a value according to the duty ratio of the CPL signal. .
- the BATECU 53 when detecting that the charge state of the battery 13 has reached the full charge state, the BATECU 53 outputs a charge stop command signal to the switch 54 to drive the switch 54 off.
- the switch 54 is turned on in response to, for example, a charge execution command signal output from the BATECU 53, and connects two resistors R2 and R3 to the CPL communication line L between the charge cable 12 and the vehicle 14. Also, the switch 54 is turned off in response to, for example, a command signal to stop charging, and cuts off the connection of the resistor R3 to the CPL communication line L.
- the BAT ECU 53 of the vehicle 14 and the CPU 34 of the charging cable 12 can mutually transmit and receive data by, for example, serial communication.
- the vehicle charging system 10 has the above configuration, and next, the operation of the vehicle charging system 10, particularly, the operation of charging the battery 13 of the vehicle 14 by the power supplied from the external power supply 11 will be described. Do.
- the operator inserts the vehicle-side plug 32 of the charging cable 12 into the plug-in connector 51 of the vehicle 14 to connect the charging cable 12 to the vehicle 14 (vehicle connection).
- the voltage of the signal output from the other terminal 44b of the CPL output unit 43 changes from the first voltage V1 to the second voltage V2 which is a voltage division of the resistor R1 and the resistor R2.
- the changeover switch 44 is connected to one terminal 44a of the CPL output unit 43, and the CPL of the second voltage V2 is A signal (oscillation signal) is output to the CPL communication line L.
- the second voltage V2 changes from the second voltage V2 to a third voltage V3 which is a voltage division of the resistor R1, the resistor R2 and the resistor R3.
- this change in voltage is detected by the voltage sensor 42, for example, after the presence or absence of an electric leakage is detected by the electric leakage detection unit 37 in a period from time t6 to t7 shown in FIG.
- the relay 38 is turned on to start charging the battery 13 of the vehicle 14. Note that the relay 38 is turned on when the presence or absence of a leak is detected. For example, when a leak occurs as in a period from time t6a to t6b shown in FIG. 2, the relay 38 is switched to off drive.
- step S01 shown in FIG. 3 information of allowable power PCCID is acquired from the charging cable 12 by power line communication.
- step S 02 the power consumption PIF consumed by the load 25, that is, the power consumption consumed other than the charging of the battery 13 of the vehicle 14 is acquired.
- step S03 the maximum supply power PMAX that can be supplied by the external power supply 11 (that is, the maximum supply power that can be supplied from the current limiter 21 of the external power supply 11) is acquired, and the power consumption is calculated from the maximum supply power PMAX.
- step S04 it is determined whether the chargeable power PEV is less than zero. If the determination result is "YES”, the process proceeds to step S05, and in step S05, the charging current ICHG is set to zero, and the process proceeds to step S09 described later. On the other hand, if the determination result is "NO”, the process proceeds to step S06.
- step S06 it is determined whether the chargeable power PEV is less than the allowable power PCCID. If the determination result is "YES”, the process proceeds to step S08. On the other hand, if the determination result is "NO”, the process proceeds to step S07. In step S07, allowable power PCCID is newly set as chargeable power PEV, and the process proceeds to step S08.
- step S10 the information of the charging current ICHG is transmitted to the charging cable 12 by the power line communication (PLC) signal, and the information of the chargeable power PEV is transmitted to the charging cable 12 by the power line communication (PLC) signal.
- the information of the power demand forecast value is transmitted to the charging cable 12 by the (PLC) signal, the current time t0 is transmitted by the power line communication (PLC) signal, and the process proceeds to the end.
- step S21 shown in FIG. 4 information of the charging current ICHG is received by the power line communication (PLC) signal.
- PLC power line communication
- step S22 information of the charging current ICHG is transmitted to the BATECU 53 of the vehicle 14 by the CPL signal (oscillation signal), and the process proceeds to the end.
- step S31 information of the charging current ICHG is received by the CPL signal (oscillation signal).
- step S33 the charging current command value, the charging voltage command value, and the charging power command value are output according to the receivable electric power PCHG, the charging of the charger 52 is controlled, and the process proceeds to the end.
- step S41 shown in FIG. 6 information on the chargeable power PEV is received by a power line communication (PLC) signal.
- step S44 the maximum charging power PCHGM and the maximum charging current ICHGM are displayed on the display unit 41, and the process proceeds to the end.
- step S51 the information of the power demand forecast value is received by the power line communication (PLC) signal, and the current time t0 is received by the power line communication (PLC) signal.
- step S52 information of the required power amount U required to charge the battery 13 to a predetermined charge state (for example, a full charge state) is acquired from the BAT ECU 53.
- step S53 an initialization process is performed to set the charge integral value UE to zero and to set the current time t0 to the charge start time TS and the calculation time t.
- step S55 it is determined whether the required power amount U is larger than the charge integral value UE. If the determination result is "NO”, the process proceeds to step S56, and in this step S56, a value obtained by adding the division time ⁇ t to the calculation time t is newly set as the calculation time t, and the above-described It returns to step S54. On the other hand, if the determination result is "YES”, the process proceeds to step S57.
- step S57 the calculation time t is set to the charge completion time TE.
- step S58 the charging completion time TE is displayed on the display unit 41, and the process proceeds to the end.
- the information of a power demand forecast value is information which shows the time change of the power consumption PIF and the chargeable electric power PEV in the external power supply 11 in the future, for example, as shown in FIG.
- the charge integration value UE obtained by time-integrating the chargeable power PEV from the charge start time TS has a time when the required power amount U is reached is the charge completion time TE.
- a period from the charging start time TS to the charging completion time TE is a charging period in which the execution of charging is continued.
- the charge completion time TE is updated every fixed period.
- the PLC communication unit 33 of the charging cable 12 and the PLC communication unit 24 of the external power supply 11 can communicate by power line communication.
- the CPU 34 of the charging cable 12 supplies power to the battery 13 of the vehicle 14 based on the information (for example, the charging current ICHG) related to the chargeable power PEV acquired from the external power supply 11 by the power line communication. Proper charging can be performed.
- the CPU 34 of the charging cable 12 draws charge power for the battery 13 of the vehicle 14 from the external power supply 11 in a power range equal to or lower than the chargeable power PEV acquired from the external power supply 11.
- the external power supply 11 exceeds the chargeable power PEV that can be supplied for charging the battery 13. It is possible to prevent excess power from being drawn. Along with this, it is possible to prevent the current limiter 21 of the external power supply 11 from operating when the battery 13 is charged.
- the calculation accuracy of the maximum charge power PCHGM and the maximum charge current ICHGM and the charge completion time TE can be improved, and the convenience can be improved. it can.
- the present invention is applicable to a vehicle charging system capable of appropriately charging the battery of the vehicle according to the power that can be supplied by the external power supply.
- control unit power consumption acquisition unit, chargeable power calculation unit
- PLC communication unit second communication control unit
- PLC communication unit first communication control unit
- CPU control unit
- Display Display
- CPL output unit transmission unit
- BATECU charge control unit
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Abstract
Description
本願は、2011年1月19日に出願された特願2011-008697号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to a vehicle charging system.
Priority is claimed on Japanese Patent Application No. 2011-008697, filed January 19, 2011, the content of which is incorporated herein by reference.
また、従来、例えば、電力ケーブル内の発振器から出力されるパイロット信号を、車両の充電システムの起動信号として用いること充電制御装置が知られている(例えば、特許文献2参照)。 Conventionally, for example, as a charging cable used when charging a battery of an electric vehicle from a power supply (external power supply) outside the vehicle such as an AC power supply for housing, designation of a charging time zone or charging start time, or charging mode The charge cable which can set change is known (for example, refer to patent documents 1).
Also, conventionally, for example, a charge control device is known in which a pilot signal output from an oscillator in a power cable is used as a start signal of a charging system of a vehicle (see, for example, Patent Document 2).
このため、例えば、給電可能な許容電力が住宅内での消費電力に応じて変動する住宅用交流電源などの外部電源において、供給可能な許容電力を超えた電力が充電電力として引き出されてしまう虞がある。この場合には、外部電源に備えられた電流制限器(あるいは遮断器)によって、住宅内での給電も含めて、外部電源から供給される電力が遮断されてしまう虞がある。
このような問題が生じることに対して、例えば、外部電源の遮断電流値を十分に高い値に設定すると、装置構成に要する費用又は電力消費に要する費用が増加するという問題が生じる。 However, according to the charging cable or the power cable according to the above-mentioned prior art, the cut-off current value of the charge cut-off device is only set in advance according to the cut-off current value of the relay etc. provided in the charge cut-off device However, this cutoff current value does not reflect the allowable power that can be supplied by the external power supply.
For this reason, for example, in an external power supply such as a residential AC power supply in which the allowable power that can be supplied varies according to the power consumption in the house, power that exceeds the allowable power that can be supplied may be extracted as charging power. There is. In this case, the current limiter (or circuit breaker) provided in the external power supply may interrupt the power supplied from the external power supply, including the power supply in the house.
With respect to the occurrence of such a problem, for example, if the cut-off current value of the external power supply is set to a sufficiently high value, there arises a problem that the cost for device configuration or the cost for power consumption increases.
そして、充電ケーブルの制御部は、この電力線通信によって外部電源から取得した充電可能電力に関連する情報に基づいて、車両のバッテリに電力を供給することから、適切な充電を行うことができる。 According to the vehicle charging system of the first aspect of the present invention, the first communication control unit of the charging cable and the second communication control unit of the external power supply can communicate by power line communication.
And since the control part of a charge cable supplies electric power to the battery of a vehicle based on the information related to the chargeable electric power acquired from the external power supply by this power line communication, it can charge appropriately.
これにより、外部電源がバッテリの充電用に供給可能な充電可能電力を超える過剰な電力を引き出してしまうことを防止することができ、バッテリの充電時に外部電源の電流制限器(あるいは遮断器など)が作動してしまうことを防止することができる。 That is, the control unit of the charging cable draws charging power for the battery of the vehicle in a power range equal to or less than the chargeable power acquired from the external power supply.
This can prevent the external power supply from drawing excessive power exceeding the chargeable power that can be supplied for charging the battery, and the current limiter (or circuit breaker, etc.) of the external power supply when charging the battery. Can be prevented from operating.
コンセント22は、充電ケーブル12のプラグ31に接続可能であって、外部電源11と充電ケーブル12とを電力授受可能に接続する。 The
The
さらに、制御部23は、PLC通信部24を介した電力線通信によって充電ケーブル12から許容電力PCCIDの情報を取得し、この許容電力PCCIDと充電可能電力PEVとの比較に応じて最終的な充電可能電力PEVを設定する。
そして、制御部23は、この充電可能電力PEVの情報をPLC通信部24から充電ケーブル12に送信させる。 Also, for example, the
Furthermore,
Then, the
つまり、外部電源11のPLC通信部24と、充電ケーブル12のPLC通信部33とは、外部電源電力線11Lおよび充電ケーブル12の電力線12Lに電力の信号と各種の情報の信号とを多重化して伝送する。 The
That is, the
PLC通信部33は、充電ケーブル12の電力線12Lに接続され、外部電源11のPLC通信部24と、電力線12Lおよび外部電源11の外部電源電力線11Lを介した電力線通信によって通信可能である。 The vehicle-
The
つまり、CPU34は、漏電検出部37によって漏電の発生が検出された場合には、リレー38をオフ駆動して電力線12Lの電流を遮断することをリレー駆動部39に指示する。 For example, based on the detection signal output from the
That is, when the
例えば、CPU34は、外部電源11のPLC通信部24から電力線通信によって送信された充電可能電力PEVの情報を、PLC通信部33を介して取得し、車両側プラグ32に印加される充電電圧VEVに基づいて最大充電電流ICHGMを算出する。
さらに、最大充電電流ICHGMおよび外部電源11の電源電圧VACに基づいて、最大充電電力PCHGMを算出し、これらの最大充電電力PCHGMおよび最大充電電流ICHGMを表示部41に表示させる。 Further, the
For example, the
Further, maximum charging power PCHGM is calculated based on maximum charging current ICHGM and power supply voltage VAC of
そして、切替スイッチ44は、CPU34の制御により2つの端子44a,44bのうち何れかひとつを選択して、抵抗R1を介してCPL通信ラインLに接続する。 The
Then, the
例えば、図2に示す時刻t1において、操作者が充電ケーブル12のプラグ31を外部電源11のコンセント22に差し込むことによって充電ケーブル12が外部電源11の電源Pに接続(電源接続)されると、メモリ35の初期設定などの所定の処理が実行される。
そして、例えば、図2に示す時刻t2において、切替スイッチ44がCPL出力部43の他方の端子44bに接続されて、発振のない所定の第1電圧V1の信号がCPL通信ラインLに出力される。 First, the main operation of charging using the charging
For example, at time t1 shown in FIG. 2, when the operator inserts the
Then, for example, at time t2 shown in FIG. 2, the
そして、例えば、図2に示す時刻t4において、この電圧の変化が電圧センサ42により検出されると、切替スイッチ44がCPL出力部43の一方の端子44aに接続されて、第2電圧V2のCPL信号(発振信号)がCPL通信ラインLに出力される。 Next, for example, at time t3 illustrated in FIG. 2, the operator inserts the vehicle-
Then, for example, when a change in this voltage is detected by the
そして、この電圧の変化が電圧センサ42により検出されると、例えば、図2に示す時刻t6~t7の期間において漏電検出部37により漏電の有無が検出された後に、例えば、時刻t7以降において、リレー38がオン駆動されて、車両14のバッテリ13に対する充電が開始される。
なお、漏電の有無が検出されるときにはリレー38はオン駆動されており、例えば、図2に示す時刻t6a~t6bの期間のように漏電が発生すると、リレー38はオフ駆動に切り替えられる。 Next, for example, at time t5 shown in FIG. 2, when the charge execution command signal is output from
Then, when this change in voltage is detected by the
Note that the
そして、例えば、図2に示す時刻t9において、この電圧の変化が電圧センサ42により検出されると、リレー38がオフ駆動されて、車両14のバッテリ13に対する充電が停止される。 Then, for example, at time t8 shown in FIG. 2, when the command signal for stopping charging is outputted from the
Then, for example, at time t9 shown in FIG. 2, when the change in voltage is detected by the
そして、例えば、図2に示す時刻t11において、操作者が充電ケーブル12のプラグ31を外部電源11のコンセント22から引き抜くことによって充電ケーブル12と外部電源11の電源Pの接続が解除される。 Then, for example, at time t10 shown in FIG. 2, when the operator pulls out the vehicle side plug 32 of the charging
Then, for example, at time t11 shown in FIG. 2, when the operator pulls the
次に、ステップS02においては、負荷25で消費されている消費電力PIF、つまり車両14のバッテリ13の充電以外で消費されている消費電力を取得する。 First, for example, in step S01 shown in FIG. 3, information of allowable power PCCID is acquired from the charging
Next, in step S 02, the power consumption PIF consumed by the
この判定結果が「YES」の場合には、ステップS05に進み、このステップS05においては、充電電流ICHGをゼロとして、後述するステップS09に進む。
一方、この判定結果が「NO」の場合には、ステップS06に進む。 Next, in step S04, it is determined whether the chargeable power PEV is less than zero.
If the determination result is "YES", the process proceeds to step S05, and in step S05, the charging current ICHG is set to zero, and the process proceeds to step S09 described later.
On the other hand, if the determination result is "NO", the process proceeds to step S06.
この判定結果が「YES」の場合には、ステップS08に進む。
一方、この判定結果が「NO」の場合には、ステップS07に進み、このステップS07においては、許容電力PCCIDを新たに充電可能電力PEVとして設定して、ステップS08に進む。 Then, in step S06, it is determined whether the chargeable power PEV is less than the allowable power PCCID.
If the determination result is "YES", the process proceeds to step S08.
On the other hand, if the determination result is "NO", the process proceeds to step S07. In step S07, allowable power PCCID is newly set as chargeable power PEV, and the process proceeds to step S08.
そして、ステップS09においては、現在の時刻以降で予測される電力需要(電力需要予測値)を取得する。 Then, in step S08, chargeable power PEV is divided by power supply voltage VAC of
Then, in step S09, the power demand (power demand forecast value) predicted after the current time is acquired.
次に、ステップS22においては、CPL信号(発振信号)により充電電流ICHGの情報が車両14のBATECU53に送信され、エンドに進む。 First, for example, in step S21 shown in FIG. 4, information of the charging current ICHG is received by the power line communication (PLC) signal.
Next, in step S22, information of the charging current ICHG is transmitted to the
次に、ステップS32においては、充電電流ICHGと外部電源11の電源電圧VACとを乗算して受給可能電力PCHG(=ICHG×VAC)が算出される。
次に、ステップS33においては、受給可能電力PCHGに応じて充電電流指令値および充電電圧指令値および充電電力指令値が出力され、充電器52の充電が制御され、エンドに進む。 First, for example, in step S31 shown in FIG. 5, information of the charging current ICHG is received by the CPL signal (oscillation signal).
Next, in step S32, the charge current ICHG and the power supply voltage VAC of the
Next, in step S33, the charging current command value, the charging voltage command value, and the charging power command value are output according to the receivable electric power PCHG, the charging of the
次に、ステップS42においては、充電可能電力PEVを、車両側プラグ32に印加される充電電圧VEVで除算して最大充電電流ICHGM(=PEV/VEV)を算出する。 First, for example, in step S41 shown in FIG. 6, information on the chargeable power PEV is received by a power line communication (PLC) signal.
Next, in step S42, the maximum charge current ICHGM (= PEV / VEV) is calculated by dividing the chargeable power PEV by the charge voltage VEV applied to the
次に、ステップS44においては、最大充電電力PCHGMおよび最大充電電流ICHGMが表示部41に表示され、エンドに進む。 Next, in step S43, the maximum charging current PCHGM (= ICHGM × VAC) is calculated by multiplying the maximum charging current ICHGM by the power supply voltage VAC of the
Next, in step S44, the maximum charging power PCHGM and the maximum charging current ICHGM are displayed on the
次に、ステップS52においては、BATECU53からバッテリ13の充電状態を所定の充電状態(例えば、満充電状態など)まで充電するのに要する要求電力量Uの情報を取得する。 First, for example, in step S51 shown in FIG. 7, the information of the power demand forecast value is received by the power line communication (PLC) signal, and the current time t0 is received by the power line communication (PLC) signal.
Next, in step S52, information of the required power amount U required to charge the
次に、ステップS54においては、算出時刻tでの充電可能電力PEV(t)に所定の分割時間Δtを乗算して得た値(=PEV(t)×Δt)を、この時点での充電積分値UEに加算して得られる値を、新たに充電積分値UEとして設定する。 Next, in step S53, an initialization process is performed to set the charge integral value UE to zero and to set the current time t0 to the charge start time TS and the calculation time t.
Next, in step S54, the value (= PEV (t) × Δt) obtained by multiplying the chargeable power PEV (t) at the calculation time t by the predetermined division time Δt is the charge integration at this time A value obtained by adding to the value UE is newly set as the charge integral value UE.
この判定結果が「NO」の場合には、ステップS56に進み、このステップS56においては、算出時刻tに分割時間Δtを加算して得られる値を、新たに算出時刻tとして設定し、上述したステップS54に戻る。
一方、この判定結果が「YES」の場合には、ステップS57に進む。 Next, in step S55, it is determined whether the required power amount U is larger than the charge integral value UE.
If the determination result is "NO", the process proceeds to step S56, and in this step S56, a value obtained by adding the division time Δt to the calculation time t is newly set as the calculation time t, and the above-described It returns to step S54.
On the other hand, if the determination result is "YES", the process proceeds to step S57.
次に、ステップS58においては、充電完了時刻TEを表示部41に表示させ、エンドに進む。 Then, in step S57, the calculation time t is set to the charge completion time TE.
Next, in step S58, the charging completion time TE is displayed on the
また、充電完了時刻TEは、一定期間毎に更新される。 In addition, the information of a power demand forecast value is information which shows the time change of the power consumption PIF and the chargeable electric power PEV in the
Further, the charge completion time TE is updated every fixed period.
そして、充電ケーブル12のCPU34は、この電力線通信によって外部電源11から取得した充電可能電力PEVに関連する情報(例えば、充電電流ICHG)に基づいて車両14のバッテリ13に電力を供給することから、適切な充電を行うことができる。 As described above, according to the
Then, the
これにより、例えば、外部電源11での消費電力PIFが増大して、充電可能電力PEVが低下する場合であっても、外部電源11がバッテリ13の充電用に供給可能な充電可能電力PEVを超える過剰な電力を引き出してしまうことを防止することができる。
これに伴い、バッテリ13の充電時に外部電源11の電流制限器21が作動してしまうことを防止することができる。 That is, the
Thereby, for example, even when the power consumption PIF of the
Along with this, it is possible to prevent the
11 外部電源
11L 外部電源電力線
12 充電ケーブル
12L 電力線
13 バッテリ
14 車両
23 制御部(消費電力取得部、充電可能電力算出部)
24 PLC通信部(第2通信制御部)
33 PLC通信部(第1通信制御部)
34 CPU(制御部)
41 表示部(表示部)
43 CPL出力部(送信部)
53 BATECU(充電制御部) 10
24 PLC communication unit (second communication control unit)
33 PLC communication unit (first communication control unit)
34 CPU (control unit)
41 Display (Display)
43 CPL output unit (transmission unit)
53 BATECU (charge control unit)
Claims (2)
- 車両充電システムであって、
バッテリおよび前記バッテリの充電を制御する充電制御部を具備する車両と、
前記車両の外部に設けられた外部電源と、
前記外部電源と前記車両とを電力授受可能に接続する電力線および前記電力線に接続された第1通信制御部を具備する充電ケーブルと、
前記外部電源に設けられ、前記充電ケーブルの前記電力線に接続可能な外部電源電力線と、
前記外部電源に設けられ、前記外部電源電力線に接続され、前記電力線および前記外部電源電力線を介した電力線通信により前記第1通信制御部と通信可能な第2通信制御部と、
前記外部電源に設けられ、前記外部電源において前記車両の前記バッテリの充電以外で消費される消費電力を取得する消費電力取得部と、
前記外部電源に設けられ、前記外部電源が供給可能な最大供給電力から前記消費電力を差し引いて得られる充電可能電力を算出する充電可能電力算出部と、
前記充電ケーブルに設けられ、前記第1通信制御部により受信された前記充電可能電力に関連する情報を前記車両の前記充電制御部に送信する送信部と、
前記充電ケーブルに設けられ、前記第1通信制御部により受信された前記充電可能電力に関連する情報に基づき、前記外部電源から前記車両の前記バッテリに電力を供給する制御部と、
を備え、
前記第2通信制御部は、前記充電可能電力に関連する情報を前記電力線通信によって前記第1通信制御部に送信し、
前記第1通信制御部は、前記第2通信制御部から送信された前記充電可能電力に関連する情報を受信する
ことを特徴とする車両充電システム。 A vehicle charging system,
A vehicle comprising a battery and a charge control unit for controlling charging of the battery;
An external power supply provided outside the vehicle;
A power cable connecting the external power source and the vehicle so as to allow power exchange, and a charging cable comprising a first communication control unit connected to the power line;
An external power supply line provided in the external power supply and connectable to the power line of the charging cable;
A second communication control unit provided in the external power supply, connected to the external power supply power line, and capable of communicating with the first communication control unit by power line communication via the power line and the external power supply power line;
A power consumption acquisition unit provided in the external power supply for acquiring power consumption consumed by the external power supply other than charging of the battery of the vehicle;
A chargeable power calculation unit provided in the external power supply and calculating chargeable power obtained by subtracting the power consumption from the maximum power supply that can be supplied by the external power supply;
A transmitting unit provided in the charging cable and transmitting information related to the chargeable power received by the first communication control unit to the charging control unit of the vehicle;
A control unit provided on the charging cable and supplying power from the external power source to the battery of the vehicle based on the information related to the chargeable power received by the first communication control unit;
Equipped with
The second communication control unit transmits information related to the chargeable power to the first communication control unit by the power line communication,
A vehicle charging system characterized in that the first communication control unit receives information related to the chargeable power transmitted from the second communication control unit. - 請求項1に記載の車両充電システムであって、
前記充電ケーブルは表示部を備え、
前記制御部は、前記第1通信制御部により受信された前記充電可能電力の情報に基づき、最大充電電流および充電完了時刻を算出し、前記算出結果を前記表示部に表示する
ことを特徴とする車両充電システム。 The vehicle charging system according to claim 1,
The charging cable includes a display unit.
The control unit calculates a maximum charging current and a charging completion time based on the information of the chargeable power received by the first communication control unit, and displays the calculation result on the display unit. Vehicle charging system.
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JP2012535504A JP5211268B2 (en) | 2011-01-19 | 2011-12-28 | Vehicle charging system |
US13/881,839 US8669740B2 (en) | 2011-01-19 | 2011-12-28 | Vehicle charging system |
CN201180051129.XA CN103181055B (en) | 2011-01-19 | 2011-12-28 | vehicle charging system |
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JP5211268B2 (en) | 2013-06-12 |
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